Pressure cooker



FIG. 1 is a front elevational view thereof;

FIG. 2 is an elevational view of the side situated on the left on view n° 1 thereof;

FIG. 3 is an elevational view of the side situated on the right on view n° 1 thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a three-quarter perspective view thereof.

The side opposite that shown in FIG. 1 is a mirror image thereof. 

The ornamental design for a pressure cooker, as shown and described. 